Gary W. Bowersox books & textbook
Gemstones of Afghanistan
Gary W. Bowersox Bonita E. Chamberlin PhD
Geoscience Press /1995-10-01 Hardcover / 220 Pages
isbn-10: 0945005199 / isbn-13: 9780945005193
The Gem Hunter: True Adventures of an American in Afghanistan
Geovision, Inc. /2004-01-22 Hardcover / 505 Pages
isbn-10: 0974732311 / isbn-13: 9780974732312
